Audio mixer board



FIG. 1 is a top-right perspective view of audio mixer board, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof; and,

FIG. 6 is a front elevation view thereof.

The ornamental design claimed is shown in solid lines in the drawings, such that broken lines illustrate environmental features not part of the claimed design, and where no claim for the bottom view is made. 

CLAIM We claim the ornamental design for an audio mixer board, as shown and described. 